Trace metal concentrations in plants and animals have been used as an indicator of environmental monitoring. Heavy metals from the soil primarily enter plants through the root system. In general, plant roots are the most important site for chemical uptake from soil. The leaves of the neem tree (Azadirachta indica) were used as a bio-indicator in this study to track trace metal levels in Katsina. Leaves were collected from four locations in Katsina metropolis: Site A, Site B, Site C, and Site D. (Katsina Steel Rolling Round-about), Sites B (Kofar Kwaya Roundabout), C (Kofar Yandaka Roundabout), and D (Kofar Yandaka Roundabout) (Army Barrack, Natsinta). Using an atomic absorption spectrophotometer, the samples were tested for iron, manganese, copper, lead, cobalt, chromium, nickel, and zinc (AAS). The average results from the four sites showed relatively high levels of iron [93.44 gg–1], manganese [28.97 gg–1], and zinc [13.28 gg–1] over chromium [8.07 gg–1], cobalt [5.79 gg–1], lead [2.50 gg–1], nickel [2.13 gg–1], and copper [1.70 gg–1]. [gg–1] Iron concentrations were also found to be significantly related to distance from the Steel Rolling Company. Site A had the highest metal loading, while Site D had the lowest. The results also showed a slight correlation between the metal concentration and the distance of each site from the source of contamination (Steel Rolling Company)- Iron has the highest level among the trace metals analyzed, while copper has the lowest. According to the findings, the trace metal burden in Katsina and its environs does not pose an immediate threat to residents or other lives.

Author(s) Details

A. Fowotade Sulayman
Department of Science Laboratory Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

Hamisu Abdu
Department of Polymer Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

A. Abdullah Saidu
Department of Science Laboratory Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

Fadhila Ahmad
Department of Science Laboratory Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

J. Zainab Suleiman
Department of Science Laboratory Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

Saleh, Isyaku
Department of Polymer Technology, College of Science and Technology, Hussaini Adamu Federal Polytechnic, Kazaure, Nigeria.

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